[tracker-miners/wip/carlosg/acoustid-writeback] tracker-writeback: Support acoustid tag writeback in gstreamer

[Carlos Garnacho <carlosg src gnome org>]

commit b6276800ecab93a60819375c60cc74532681afd5
Author: Carlos Garnacho <carlosg gnome org>
Date:   Mon Jun 29 14:17:28 2020 +0200

    tracker-writeback: Support acoustid tag writeback in gstreamer
    
    Handle it like the other tags.

 .../tracker-writeback-gstreamer.c                  | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)
---
diff --git a/src/tracker-writeback/tracker-writeback-gstreamer.c 
b/src/tracker-writeback/tracker-writeback-gstreamer.c
index 2f40cc810..92186a234 100644
--- a/src/tracker-writeback/tracker-writeback-gstreamer.c
+++ b/src/tracker-writeback/tracker-writeback-gstreamer.c
@@ -948,6 +948,29 @@ writeback_gstreamer_write_file_metadata (TrackerWritebackFile  *writeback,
 
                        handle_musicbrainz_tags (resource, prop, element, mb_tags);
                }
+
+               if (g_strcmp0 (prop, "nfo:hasHash") == 0) {
+                       TrackerResource *hash;
+                       const gchar *value = NULL, *algorithm;
+
+                       hash = tracker_resource_get_first_relation (resource, prop);
+
+                       if (hash) {
+                               algorithm = tracker_resource_get_first_string (hash,
+                                                                              "nfo:hashAlgorithm");
+                               value = tracker_resource_get_first_string (hash,
+                                                                          "nfo:hashValue");
+                       }
+
+#ifdef GST_TAG_ACOUSTID_FINGERPRINT
+                       if (value && algorithm && g_strcmp0 (algorithm, "chromaprint") == 0) {
+                               g_value_init (&val, G_TYPE_STRING);
+                               g_value_set_string (&val, value);
+                               writeback_gstreamer_set (element, GST_TAG_ACOUSTID_FINGERPRINT, &val);
+                               g_value_unset (&val);
+                       }
+#endif
+               }
        }
 
        writeback_gstreamer_save (element, file, error);